Hercules Engine Co.: Vehicle Speed Control
Hercules Engine Co. reported this defect to federal regulators on Jul 1, 1994 and put the number of vehicles at risk at 412. The repair is free for as long as the recall stands.
The defect
THE ENGINE THROTTLE PLATE SHAFT CAN BECOME DISCONNECTED FROM THE THROTTLE LEVER ASSEMBLY. THE HEX HEAD LOCKING SCREW BETWEEN THE THROTTLE STOP ASSEMBLY AND THE THROTTLE SHAFT CAN LOOSEN. ALSO, THE HEX HEAD PINCH BOLT BETWEEN THE THROTTLE LEVER AND THE THROTTLE PLATE SHAFT CAN LOOSEN. THE THROTTLE RETURN SPRING CONTROLS THE THROTTLE PLATE POSITION THROUGH THE THROTTLE LEVER. IF EITHER SCREW LOOSENS, THE THROTTLE RETURN SPRINGS NO LONGER CONTROL THE THROTTLE PLATE POSITION.
The risk
UNANTICIPATED FULL THROTTLE CONDITIONS CAN OCCUR,RESULTING IN A LOSS OF THROTTLE CONTROL AND POSSIBLE ACCIDENT.
The remedy
THE THROTTLE BODY HAS BEEN REDESIGNED TO INCLUDE A SECONDARY RETURN SPRING ATTACHED DIRECTLY TO THE THROTTLE PLATE SHAFT. THROTTLE STOP ASSEMBLY AND SECONDARY RETURN SPRING LOCKING SCREWS WILL BE TORQUED TO SPECIFICATION AND TREATED WITH A THREAD SEALING COMPOUND SPECIFICALLY DESIGNED FOR THREAD LOCKING APPLICATIONS.
4 model years covered
Newest first| Vehicle | Complaints | Recalls | Fires | Crashes |
|---|---|---|---|---|
| 1994 Hercules Impco | 0 | 1 | 0 | 0 |
| 1993 Hercules Impco | 0 | 1 | 0 | 0 |
| 1992 Hercules Impco | 0 | 1 | 0 | 0 |
| 1991 Hercules Impco | 0 | 1 | 0 | 0 |
What this page is, and what to do next
A recall is not an opinion. It is a Part 573 report a manufacturer is required by federal law to file once it decides a defect poses an unreasonable risk to safety, and it commits them to repairing the vehicle at no cost to the owner. The three passages above are the manufacturer’s own wording as published by NHTSA.
This page describes the campaign. It cannot tell you whether one particular car has already been through the shop — that is tracked by VIN, and only the manufacturer knows it. Check yours at nhtsa.gov/recalls or with a franchised dealer, quoting campaign number 94E020000.
Full record for the 1994 Hercules Impco → · Recalls carrying a do-not-drive advisory → · Where this data comes from →